Speckle reduction for display system with electromechanical grating
US7119936B2 · kind B2 · utility
17Cited by
22References
50Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2004 |
| Grant date | Oct 10, 2006 |
| Priority date | — |
| Expiry date | Apr 1, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/48
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display system (10) with reduced speckle has a light source (70) providing an illumination beam and a linear light modulator (85) having at least one linear array of light modulating devices for forming a modulated beam. The modulated beam has a plurality of orders of diffracted light. An obstructing element (82r,82g,82b) blocks a zeroeth order reflected light from the modulated beam. An angle-transforming optical assembly (30) anamorphically conditions the modulated beam. A scanning element (77) scans the modulated beam toward a display surface (90) for forming a two-dimensional image thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.